Description

Sulfonium, (4-Methylphenyl)Diphenyl-, Bromide is a high-purity organosulfur salt, widely recognized as a versatile and efficient photoacid generator (PAG) precursor. Its core value lies in its ability to generate strong acids upon exposure to light, making it a critical component in advanced photoresist formulations for the electronics industry. This compound is essential for manufacturers and R&D facilities in semiconductor fabrication, advanced lithography, and specialty polymer synthesis, where precise control over acid-catalyzed reactions is paramount.

Application

• Semiconductor Photoresists: A key photoacid generator (PAG) precursor in chemically amplified resists (CAR) for deep-UV (DUV), extreme-UV (EUV), and electron-beam lithography.
• Advanced Lithography: Enables high-resolution patterning for integrated circuits (ICs) and microelectromechanical systems (MEMS).
• Polymer Chemistry: Used as a cationic initiator or catalyst in the polymerization and cross-linking of epoxides, vinyl ethers, and other monomers.
• Surface Modification: Facilitates acid-catalyzed surface reactions for creating functional coatings and adhesion promoters.
• Chemical Synthesis: Serves as an efficient catalyst or reagent in organic synthesis for constructing complex molecular architectures.
• Research & Development: A valuable tool in academic and industrial labs for developing new photoresist materials and studying cationic reaction mechanisms.

Basic Information

Product Name	Sulfonium, (4-Methylphenyl)Diphenyl-, Bromide
CAS No.	4189-82-6
Molecular Formula	C19H17BrS
Molecular Weight	357.31 g/mol
Synonyms	(4-Methylphenyl)diphenylsulfonium Bromide; p-Tolyldiphenylsulfonium Bromide; Diphenyl(p-tolyl)sulfonium Bromide; TPS-Br; Photoacid Generator TPS-Br; (p-Tolyl)diphenylsulfonium Bromide; Sulfonium, diphenyl(p-tolyl)-, bromide; 4-Methylphenyldiphenylsulfonium Bromide
EINECS	Contact for details

Quality Control

Our Sulfonium, (4-Methylphenyl)Diphenyl-, Bromide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the stringent requirements of the electronics and fine chemical industries. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed and away from moisture and direct light exposure to maintain stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.